In order to be eligible for a Medicare Part D (prescription drug plan), you must meet each of the following requirements:
- You must be enrolled in both Part A and Part B of Medicare
- You must be at least 65 years old or live in a state that allows Medigap coverage for people under 65 who have a qualifying disability
- You must live in a state that sells the plan you are interested in purchasing. Not all plans are available in every state.